Which of the following statements about euchromatin is true?

An illustration of a human chromosomal diagram is shown below.

Which of the following options best describes the shape of the chromosome in the above diagram?

An illustration of a human chromosomal diagram is shown below. 

Which of the following choices most aptly describes the labeled parts? 

Which specific histone protein type regulates the expression of genes?

Which of the following is not typically an epigenetic phenomenon that is influenced by chromatin modification or DNA methylation?

Which of the following assertions regarding the genetic materials of prokaryotes and eukaryotes is incorrect?

_______________ chromosomes are formed during the diplotene stage of prophase1 of meiosis cell division. They are a special type of chromosome found in the developing oocytes of most animals except mammals.